$ git clone -n https://src.fedoraproject.org/rpms/perl-Mojo-IOLoop-ReadWriteProcess.git /var/lib/mock/f39-build-1585766-38149/root/chroot_tmpdir/scmroot/perl-Mojo-IOLoop-ReadWriteProcess
Cloning into '/var/lib/mock/f39-build-1585766-38149/root/chroot_tmpdir/scmroot/perl-Mojo-IOLoop-ReadWriteProcess'...
$ git fetch origin a156f5b4cf807cb4c2d2f3810a0cb7ccf3e2fb92:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mojo-IOLoop-ReadWriteProcess
 * [new ref]         a156f5b4cf807cb4c2d2f3810a0cb7ccf3e2fb92 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a156f5b Update to 0.34 and migrate to SPDX